As of 10:26 AM EST on December 17, 2025, all 3 cities in Alger County, MI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Chatham, MI with a reading of 0.3.
Over the next 24 hours, the highest UV Index reading in Alger County, MI is expected to be 1 in Chatham between 1:00 PM - 2:00 PM EST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |